The NOx emission of the circulating fluidized bed (CFB) boiler is not only affected by the fuel properties, but also closely related to the combustor performance the key to and operation conditions.

Y. Tsuo, J. M., K. Sellakumar. (1999). Improving Limestone Utilization in a Commercial-Scale Circulating fluidized Bed Boiler Through Ash Reactiviation and Recycle. Proceedings of the 15th International Conference on Fluidized Bed Combustion, Savannah, Georgia. Google Scholar

The mineral compositions of CFBCA from different power plants are shown in Fig. 4. Fig. 4 (a) shows that the main mineral composition of CFBCA is anhydrite and lime. The mineral compostions of CFBCA produced from a CFBC boiler in Pingshuo Coal Gangue Power Plant of China are presented in Fig. 4 (b) while those of CFBCA …

This work presents a practical result of experimental investigation of the limestone particle size effect on de-SOx from a circulating fluidized bed combustion (CFBC) boiler that burns domestic anthracite and is the first industrial scale in Korea. Because of combustion problems such as clinker formation, fine limestone has not …

1. Introduction. Circulating fluidized bed combustion (CFBC), which has many advantages such as a wide fuel flexibility, low combustion temperatures (typically in the range of 800–900 °C), low NO x emissions, a high combustion efficiency, a significant desulfurization rate (typically 90%) and so on [1], [2], [3], is a very effective technology …

2. What Are the Main Features of Fluidized Bed Steam Boilers? 2.1 Operating Conditions. The basic characteristics of the operation of a circulating fluidized bed boiler include low-temperature, power-controlled combustion, a high-velocity, high-concentration, and high-circulation process of solid material fluidization, as well as a …

In this paper, an experiment with various proportions of RM co-combustion was conducted on a 0.2 t/h circulating fluidized bed (CFB) boiler. Desulfurization performance, combustion characteristics ...

Desulfurizer in Circulating Fluidized Bed Boiler Zhong Huang, Jimiao Long, Lei Deng and Defu Che * ... The carbide slag exhibited a higher desulfurization e ciency than the limestone in the pilot ...

We compared the direct desulfurization behavior of four different domestic limestone samples (CaO fraction 40–55%, average particle size 37.5 μm) using a thermogravimetric analyzer (TGA) for experiments conducted under oxy-circulating fluidized bed (CFB) combustion conditions (temperature 600–850 °C, CO 2 60–95%). …

A Review of Desulfurization Technology using Limestone in Circulating Fluidized Bed Boiler Type Power Plant Chul-Seoung Baek*,***, Jun-Hoyung Seo*, Ji-Whan Ahn**, ...

This study investigated that status of domestic and international furnace desulfurization and desulfurization characteristics of limestone for fluidized bed use depending on the...

When the emission concentration of NOX at the outlet of selective catalytic reduction reactor is controlled in 20 mg/Nm3 and 15 mg/Nm3, the power plant has a significant …

Research on the expansion characteristics and compressive strength of mortars containing circulating fluidized bed combustion desulfurization slag. Adv Mater Sci ... Effects of different factors on sulfur xide formations in a coal-fired circulating fluidized bed boiler. Chem ... Jet mill grinding of portland cement, limestone, and fly …

In the context of increasingly stringent pollutant emission standards, more and more circulating fluidized bed (CFB) boilers are pursuing low-NO x combustion and high …

SO 2 emissions from coal-fired boilers are air pollutants and a source of acid rain, causing extensive environmental pollution. Limestone (CaCO 3) is a Ca-based sorbent which is injected into circulating fluidized bed (CFB) boilers, where it combines with SO 2 to produce calcium sulfate (CaSO 4).As a result, SO 2 emissions from a …

Semantic Scholar extracted view of "A sulphur capture model for circulating fluidized-bed boilers" by T. Mattisson et al. ... model for gas-solid particle flow in industrial scale circulating fluidized bed boiler combining with combustion and desulfurization (using limestone … Expand. PDF. 1 Excerpt;

Sulfur capture by limestone particles in a circulating fluidized bed is studied by modeling. Small particles are reactive but they have a short residence time depending on the separation ...

Due to its high content of Ca(OH) 2, carbide slag becomes a potential alternative to limestone as the in-bed desulfurizer of circulating fluidized bed (CFB) boilers. In this study, the calcination and sulfation …

In this paper, a 65 t/h oil shale-fired circulating fluidized bed (CFB) boiler was put into commercial operation in Huadian of China in 1996 and industrial hot experiment was done for studying the ...

Due to its high content of Ca(OH)2, carbide slag becomes a potential alternative to limestone as the in-bed desulfurizer of circulating fluidized bed (CFB) boilers.

Abstract This study investigated that status of domestic and international furnace desulfurization and desulfurization characteristics oflimestone for fluidized bed use depending on the technology for CFBC one of the CCPs. Limestone-based desulfurizing agentis one of the superior elements which are optimal at around 850-950 …

special environmental modifications. In the case of fluidized-bed boilers, desulfurization is carried out intrafurnace, using mainly limestone as the fluidizing material. For denitration, PC boilers operate at combustion temperatures from 1,400oC to 1,500oC, whereas circulating fluidized-bed boilers operate at lower

The application of semi dry desulphurization technology in a circulating fluidized bed boiler is introduced in the paper. The principle and technical characteristics of semi dry desulphurization process are described in detail. The semi dry desulfurization process has certain reference value in the application of circulating fluidized bed boilers.

This study aims to investigate the effect of adding circulating fluidized bed combustion (CFBC) ash, desulfurization slag, air-cooled blast-furnace slag and coal bottom ash to the controlled low …

This study investigated that status of domestic and international furnace desulfurization and desulfurization characteristics of limestone for fluidized bed use depending on the...

With the stringent emission regulation taking effect, it is difficult for the conventional desulfurization technology in circulating fluidized bed (CFB) boilers to meet the requirements of ultralow SO 2 emission. Therefore, in this paper, the application of natural ultrafine limestone, with a Sauter mean diameter of less than 20 μm, was tested …

In-furnace desulfurization technology is usually used in circulating fluidized bed (CFB) boilers, and natural limestone is the most common calcium-based sorbent for sulfur …

Due to its high content of Ca(OH)2, carbide slag becomes a potential alternative to limestone as the in-bed desulfurizer of circulating fluidized bed (CFB) boilers. In this study, the calcination and sulfation characteristics of carbide slag were investigated by three different facilities, thermogravimetric analyzer (TGA), 1 MWth pilot CFB ...

This work presents a practical result of experimental investigation of the limestone particle size effect on de-SO x from a circulating fluidized bed combustion …

In-furnace desulfurization has been widely used in circulating fluidized bed boilers. SO2 is removed by reacting with limestone during the process of sulfation after calcination in air combustion ...